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Using Special Features in Libraries 31
Using Special Features in
Libraries
Non-Queued ACI Commands
Queued ACI Commands
Treatment of Reserved Fields
To ensure forwards compatibility with future versions of the ACI, automation
controller firmware should set any command fields labelled as ‘Reserved’ to
zero. Likewise, the firmware should mask off any response fields labelled as
‘Reserved’ during the processing of tape drive responses. This will allow older
versions of automation controller firmware to operate successfully with newer
versions of tape drive firmware.
ACI Command Recommended time-out value
Get Drive Info 5s
Get Drive Status 5s
Get Drive Configuration 5s
Get Error Info 5s
Get Buffer Size 5s
No Op 5s
Acknowledge Attention 5s
ACI Command Recommended time-out value
ACI Load—immediate 5s
ACI Load—non-immediate (drive idle,
unloaded)
300s
ACI Unload—immediate 5s
ACI Unload—non-immediate (tape
loaded, at EOM, drive idle)
300s or 9000s depending on
implementation strategy
Set Drive Configuration (tape loaded, at
EOM, SCSI unload)
300s or 9000s depending on
implementation strategy
ACI Reset—ACI bus 5s
ACI Reset—drive 5s
Set Baud Rate 5s